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Data Device Corporation
www.ddc-web.com
Model RDC-19220/2, RDC-19220/2S, RDC-19229S Series
REV CODE 1
RDC-19220/2 and RDC-19220/2S Block Diagram
Figure 2
PARAMETER
UNIT
VALUE
FREQUENCY RANGE
Hz
47-1k
1k-4k
4k-10k
ACCURACY -XX2
Min
4+1 LSB
5+1 LSB
-XX3 (note 1)
Min
2+1 LSB
3+1 LSB
Repeatability
LSB
± 1
± 2
Differential Linearity
LSB
± 1
± 2
REFERENCE
(+Ref, -Ref)
Type
Differential
Voltage: differential
V
± 10 max
single ended
V
± 5 max
overload
V
± 25 continuous 100 transient
Frequency
Hz
DC to 40 kHz
Input Impedance
Ohm
10M min //20 pf
±Sig/Ref Phase Shift
deg
6 max
SIGNAL INPUT
(+S, -S, SIN, +C, -C, COS)
Type
Resolver, differential, groundbased
Voltage: operating
Vrms
2 ± 15%
overload
V
± 25 continuous
Input Impedance
Ohm
10M min //10 pf
POWER SUPPLIES (note 5)
Nominal Voltage
V
+5
-5
Voltage Range
%
±5
Max Volt. w/o
V
+7
-7
Damage
Current
mA
14 typ, 22 max (each)
RDC-19220/2 Specifications
Notes:
1. Accuracy in LVDT mode is 0.15% + 1 LSB of full scale.
2. If the frequency is between 47Hz and 1kHz, then there may be 1 LSB of jitter at quadrant boundaries.
3. The maximum phase shift tolerance will degrade linearly from 45 degrees at 400 Hz to 30 degrees at 60 Hz.
4.-XX5 accuracy is 1minute + 1 LSB up to 5 kHz max.
5. See full datasheet for +5V only option details.
SIN
-S
+S
COS
-C
+C
+5C
+CAP
-CAP
-5C
A GND
+5 V
GND
-5 V
CONTROL
TRANSFORMER
-5 V
INVERTER
(RDC-19222
ONLY)
DATA
LATCH
GAIN
DEMODULATOR
16-BIT
UP/DOWN
COUNTER
HYSTERESIS
+REF -REF
BIT
R
1
VCO
&
TIMING
-
+
-
+
AB
INH
EM
BIT 1
THRU
BIT 16
EL
AB
CB
E
RS
RC
RV
RB
CBW
C BW
10
VSUM
VEL
VCO
INTEGRATOR
SYNTHESIZED
REFERENCE
(RDC1922XS ONLY)
SIGNAL
INPUTS
REFERENCE
INPUT
EXTERNAL
COMPONENTS
RESOLUTION
CONTROL
DIGITAL
OUTPUT
PARAMETER
UNIT
VALUE
FREQUENCY RANGE
Hz
47-1k
1k-4k
4k-10k
ACCURACY -XX2
Min
4+1 LSB
5+1 LSB
-XX3 (note 1)
Min
2+1 LSB
3+1 LSB
Repeatability
LSB
± 1
± 2
Differential Linearity
LSB
± 1
± 2
FREQUENCY RANGE
Hz
47-1k (note 4)
1k-5k
ACCURACY -XX5 (note 1 & 4) Min
1+1 LSB
Repeatability
LSB
± 1
Differential Linearity
LSB
± 1
REFERENCE
(+Ref, -Ref)
Type
Differential
Voltage: differential
V
± 10 max
single ended
V
± 5 max
overload
V
± 25 continuous 100 transient
Frequency
Hz
DC to 10,000
Input Impedance
Ohm
10M min //20 pf
±Sig/Ref Phase Shift
deg
45 max from 400 Hz to 10 kHz (note 3)
SIGNAL INPUT
(+S, -S, SIN, +C, -C, COS)
Type
Resolver, differential, groundbased
Voltage: operating
Vrms
2 ± 15%
overload
V
± 25 continuous
Input Impedance
Ohm
10M min //10 pf
POWER SUPPLIES (note 5)
Nominal Voltage
V
+5
-5
Voltage Range
%
±5
Max Volt. w/o
V
+7
-7
Damage
Current
mA
14 typ, 22 max (each)
RDC-19220/2S Specifications